city officials went on the offensive. taking aim at gun violence by calling for background checks on gun buyers. >> loss of any child, in any community, in this city, is a loss to the entire city. >> reporter: moving 200 more officers from behind their desks to the streets. >> if i have to put a policeman here, 24 hours a day, 7 days a week, 365, we're going to make a point that this territory belongs to the community. >> i'm hadiya, year 2015. >> reporter: the victims have names and families. 15-year-old honor student, hadiya pendelton, has become the latest face of violence in this city. in sixth grade, she took part in an anti gang video. >> your job is to say no to gangs and yes to a great future. >> reporter: despite by laws that prohibit gunshots within city limits, more than any other city in america, chicago appears to be awash in guns. more than 7,400 seized by police last year, almost 600 since january 1st. >> chicago certainly has strict gun control laws. but the difficulty is that outlying areas outside of chi